Aquatic Information Center

 

IFAS# FA-27

Dissolved Oxygen for Fish Production

Ruth Francis-Floyd


Opening Paragraph:
What Is Dissolved Oxygen? Dissolved Oxygen (DO) refers to oxygen gas that is dissolved in water. Fish "breathe" oxygen just as land animals do. However, fish are able to absorb oxygen directly from the water into their bloodstream using gills, whereas land animals use lungs to absorb oxygen from the atmosphere.
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